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AOL Inc. confirmed Monday that it has reached a partial patent settlement with ringtone company Vringo Inc. related to online search and advertising.

The settlement is partial because AOL is still named in the lawsuit as a customer of Google Inc., the main defendant in the patent suit.

Filed in 2011, the lawsuit claims that Google, AOL, IAC/InterActiveCorp and others violate two patents related to Internet search filtering technology used to place the best ads in the best positions on websites. A trial date for the lawsuit is scheduled for Oct. 16.

Vringo declined to comment. AOL did not comment on the terms of the settlement.